Kolab is a free and open source groupware suite. It consists of the Kolab server and a wide variety of Kolab clients, including KDE PIM-Suite Kontact, Roundcube web frontend, Mozilla Thunderbird and...

Latest version of Kolab Groupware-Server is 3.4 and it was released on 2015-02-27.

Modest is a free, open source, email client developed by Nokia's maemo project. Small and lightweight, it is intended for use on hardware with “modest” resources, in particular Nokia's N800 and N810...

Latest version of Modest is 1.0-2008.35-1 and it was released on 2008-09-29.

K-9 Mail is an independent email application for the Android operating system. It is made available as Free/Open Source Android Software under the Apache License version 2.0. The program is marketed...

Latest version of K-9 Mail is {{#property:P348}} and it was released on 2016-12-31.

Hypermail is a free program for creating email archives, in the form of cross-referenced HTML documents. It takes a file in Unix mbox format and generates an HTML archive, complete with an index and...

Latest version of Hypermail is 2.3.0 and it was released on 2009-11-12.

Exim is a mail transfer agent (MTA) used on Unix-like operating systems. Exim is free software distributed under the terms of the GNU General Public License, and it aims to be a general and flexible...

esoTalk is a light-weight Internet forum package written in the PHP scripting language. Available under the GNU General Public License, esoTalk is a free software. It is designed to be simple, fast,...

OpenSMTPD is a Unix system daemon implementing the Simple Mail Transfer Protocol to deliver messages on a local machine or to relay them to other SMTP servers. It was first released on 17 March 2013...

Latest version of OpenSMTPD is 6.0.2 and it was released on 2016-10-13.